Transformer based voltage supply
There is disclosed a voltage summer including a transformer having a primary side and a secondary side, wherein a first voltage to be summed is connected to the primary side and a second voltage to be summed is connected to the secondary side. There is further disclosed a transformer comprising a primary winding and a secondary winding and having a turns ratio of primary winding to secondary winding of x:y, providing x turns in series in the primary winding and providing y turns in series in the secondary winding; providing an equal number of turns in the primary and secondary windings; and closely coupling each primary winding turn with a secondary winding turn.
1. A transformer including:
a) a plurality of primary windings i, each having xi turns in series, and a secondary winding having y turns in series;
b) each turn of each primary winding closely coupled with a turn of each other primary winding; and
c) each primary winding turn closely coupled with a secondary winding turn.
2. A transformer according to claim 1 wherein the closely coupled turns are coupled in parallel.
3. A transformer according to claim 1 wherein the number of turns in each of the primary and secondary winding is x*y.
4. A transformer according to claim 3 wherein there is provided y parallel branches in the primary winding, each with x turns.
5. A transformer according to claim 3 , wherein there is provided x parallel branches in the secondary winding, each with y turns.
6. A transformer according to claim 3 , wherein there is provided p branches in the primary winding, the number of turns in the primary winding being p*x*y.
7. A transformer according to claim 6 wherein there is provided p*x branches in the secondary winding.
8. A transformer according to claim 3 wherein there is an equal number of turns in each parallel branch.
9. A transformer according to claim 6 wherein the number of branches in the primary winding is y*p, the number of branches in the secondary winding being x*p.
10. A transformer according to claim 9 in which the number of turns in the primary and secondary winding is the lowest common multiple of x i *y for all i.
11. A transformer according to claim 10 in which the lowest common multiple is t, the number of branches in each primary winding being t/x i , each having x i turns.
12. A transformer according to claim 11 in which the number of branches in the secondary winding is t/y, each having y turns.
13. A transformer according to claim 9 , wherein there is provided p i branches in each primary winding, the number of turns in each primary winding being p i *x i *y.
14. A transformer comprising a plurality i of primary windings and a secondary winding and having a turns ratio of primary winding to secondary winding of x i :y, the transformer including:
a) x i turns in series in each primary winding i and y turns in series in the secondary winding;
b) an equal number of turns in each primary and secondary windings; and
c) each primary winding turn being closely coupled with a turn of every other primary winding and with a secondary winding turn.